1. Tabs (like in vim). I've found only vim and emacs have tabs in a way that makes sense to me. Kakoune also has a cool model, where I can use my window manager (or tmux) to recreate tabs.
2. Code folding, I like to fold everything as soon as I open a file to get an "overview" and then slowly unfold as look into the details. Wasn't in Helix last time I checked.
3. Narrowing. Emacs has it built in [0], (neo)vim requires a plugin [1]. Similar to code folding, when I'm working on a large function, I want to pretend it's the entirety of my buffer.
Other than that, I'm not convinced that changing the order of key combinations makes sense. Kakoune did the same, I'm not a fan. I spent too long "thinking" in vim mode.
I think it's great at bringing the "floor" up, it's much easier to get productive in helix. But the ceiling is lower than vim.
[0] https://www.gnu.org/software/emacs/manual/html_node/emacs/Na...